I stressed in the third lecture that like any--insurance, like any other risk management device, is an invention.

在第三次课上我已经强调过了,保险和其它风险管理工具一样,是一种发明

耶鲁公开课 - 金融市场课程节选

The city, as Aristotle understands, will always exist in a world with other cities or other states, based on different principles that might be hostile to one's own.

城市，如亚里士多德所认为，将永远会,和其它城市或国家同时存在，根于不同的管理原则,可能还会对自己人怀有敌意。

耶鲁公开课 - 政治哲学导论课程节选